19149693657147 has 96 divisors (see below), whose sum is σ = 29048045095680. Its totient is φ = 12144774216960.

The previous prime is 19149693657137. The next prime is 19149693657161. The reversal of 19149693657147 is 74175639694191.

19149693657147 is a `hidden beast` number, since 1 + 9 + 1 + 4 + 9 + 6 + 9 + 3 + 6 + 571 + 47 = 666.

It is not a de Polignac number, because 19149693657147 - 2⁷ = 19149693657019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19149693657137) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1784182993 + ... + 1784193725.

It is an arithmetic number, because the mean of its divisors is an integer number (302583803080).

Almost surely, 2^{19149693657147} is an apocalyptic number.

19149693657147 is a deficient number, since it is larger than the sum of its proper divisors (9898351438533).

19149693657147 is a wasteful number, since it uses less digits than its factorization.

19149693657147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11433 (or 11430 counting only the distinct ones).

The product of its digits is 308629440, while the sum is 72.

The spelling of 19149693657147 in words is "nineteen trillion, one hundred forty-nine billion, six hundred ninety-three million, six hundred fifty-seven thousand, one hundred forty-seven".